Home / 811,934.60-1,120,442.04-449,373.80

Finding the Fourth Proportional to 811,934.60, 1,120,442.04 and 449,373.80

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Solution

The fourth proportional to 811,934.60, 1,120,442.04 and 449,373.80 is: 620,120.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,934.60 : 1,120,442.04 = 449,373.80 : x
  2. Step 2: Convert to fraction form
    811,934.60/1,120,442.04 = 449,373.80/x
  3. Step 3: Cross multiply
    811,934.60x = 1,120,442.04 × 449,373.80
  4. Step 4: Simplify right side
    811,934.60x = 503,497,297,194.55
  5. Step 5: Solve for x
    x = 503,497,297,194.55/811,934.60
  6. Step 6: Final answer
    x = 620,120.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.